Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter
The North Atlantic jet stream is projected to extend eastward towards Europe in boreal winter in response to climate change. We show that this response is robust across a hierarchy of climate models and climate change scenarios. We further show that cloud-radiative changes contribute robustly to the...
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ftdatacite:10.5445/ir/1000135489 2023-05-15T17:28:32+02:00 Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter Albern, Nicole Voigt, Aiko Pinto, Joaquim G. 2021 PDF https://dx.doi.org/10.5445/ir/1000135489 https://publikationen.bibliothek.kit.edu/1000135489 en eng IOP Publishing Creative Commons Namensnennung 3.0 Open Access info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/3.0/deed.de CC-BY Text article-journal Journal Article ScholarlyArticle 2021 ftdatacite https://doi.org/10.5445/ir/1000135489 2021-11-05T12:55:41Z The North Atlantic jet stream is projected to extend eastward towards Europe in boreal winter in response to climate change. We show that this response is robust across a hierarchy of climate models and climate change scenarios. We further show that cloud-radiative changes contribute robustly to the eastward extension of the jet stream in three atmosphere models, but lead to model uncertainties in the jet stream response over the North Atlantic. The magnitude of the cloud contribution depends on the model, consistent with differences in the magnitude of changes in upper-tropospheric cloud-radiative heating. We further study the role of regional cloud changes in one of the three atmosphere models, i.e. the ICON model. Tropical cloud-radiative changes dominate the cloud impact on the eastward extension of the jet stream in ICON. Cloud-radiative changes over the Indian Ocean, western tropical Pacific, and eastern tropical Pacific contribute to this response, while tropical Atlantic cloud changes have a minor impact. Our results highlight the importance of upper-tropospheric tropical clouds for the regional circulation response to climate change over the North Atlantic-European region and uncertainty therein. Text North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Pacific Indian |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
The North Atlantic jet stream is projected to extend eastward towards Europe in boreal winter in response to climate change. We show that this response is robust across a hierarchy of climate models and climate change scenarios. We further show that cloud-radiative changes contribute robustly to the eastward extension of the jet stream in three atmosphere models, but lead to model uncertainties in the jet stream response over the North Atlantic. The magnitude of the cloud contribution depends on the model, consistent with differences in the magnitude of changes in upper-tropospheric cloud-radiative heating. We further study the role of regional cloud changes in one of the three atmosphere models, i.e. the ICON model. Tropical cloud-radiative changes dominate the cloud impact on the eastward extension of the jet stream in ICON. Cloud-radiative changes over the Indian Ocean, western tropical Pacific, and eastern tropical Pacific contribute to this response, while tropical Atlantic cloud changes have a minor impact. Our results highlight the importance of upper-tropospheric tropical clouds for the regional circulation response to climate change over the North Atlantic-European region and uncertainty therein. |
format |
Text |
author |
Albern, Nicole Voigt, Aiko Pinto, Joaquim G. |
spellingShingle |
Albern, Nicole Voigt, Aiko Pinto, Joaquim G. Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter |
author_facet |
Albern, Nicole Voigt, Aiko Pinto, Joaquim G. |
author_sort |
Albern, Nicole |
title |
Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter |
title_short |
Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter |
title_full |
Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter |
title_fullStr |
Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter |
title_full_unstemmed |
Tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over Europe during boreal winter |
title_sort |
tropical cloud-radiative changes contribute to robust climate change-induced jet exit strengthening over europe during boreal winter |
publisher |
IOP Publishing |
publishDate |
2021 |
url |
https://dx.doi.org/10.5445/ir/1000135489 https://publikationen.bibliothek.kit.edu/1000135489 |
geographic |
Pacific Indian |
geographic_facet |
Pacific Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_rights |
Creative Commons Namensnennung 3.0 Open Access info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/3.0/deed.de |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5445/ir/1000135489 |
_version_ |
1766121258715447296 |